syzbot


WARNING in comedi_release_hardware_device (2)

Status: auto-obsoleted due to no activity on 2024/03/21 22:55
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+b7d15d422fa5f76e2b02@syzkaller.appspotmail.com
First crash: 114d, last: 114d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in comedi_release_hardware_device fs 1 225d 221d 0/26 auto-obsoleted due to no activity on 2023/12/01 08:38

Sample crash report:
vmk80xx 6-1:0.0: driver 'vmk80xx' failed to auto-configure device.
------------[ cut here ]------------
sysfs group 'power' not found for kobject 'comedi0'
WARNING: CPU: 0 PID: 4842 at fs/sysfs/group.c:282 sysfs_remove_group+0x12a/0x170 fs/sysfs/group.c:282
Modules linked in:
CPU: 0 PID: 4842 Comm: kworker/0:5 Not tainted 6.7.0-rc5-syzkaller-g8be0c877fb3b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: usb_hub_wq hub_event
RIP: 0010:sysfs_remove_group+0x12a/0x170 fs/sysfs/group.c:282
Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 37 48 8b 33 48 c7 c7 60 1b 98 86 e8 86 f3 50 ff <0f> 0b eb 98 e8 5d 3f d5 ff e9 01 ff ff ff 48 89 df e8 50 3f d5 ff
RSP: 0018:ffffc9000d8aef60 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffffff86c984a0 RCX: ffffc9000e309000
RDX: 0000000000040000 RSI: ffffffff811733c6 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000506360 R12: ffff88811bdf8000
R13: ffffffff86c98a40 R14: dffffc0000000000 R15: ffff88811c46b078
FS:  0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f58907e8000 CR3: 000000013a80c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dpm_sysfs_remove+0x9d/0xb0 drivers/base/power/sysfs.c:837
 device_del+0x1a8/0xa50 drivers/base/core.c:3789
 device_unregister+0x1d/0xc0 drivers/base/core.c:3855
 device_destroy+0x9a/0xd0 drivers/base/core.c:4414
 comedi_free_board_dev drivers/comedi/comedi_fops.c:611 [inline]
 comedi_free_board_dev drivers/comedi/comedi_fops.c:606 [inline]
 comedi_release_hardware_device+0x196/0x210 drivers/comedi/comedi_fops.c:3291
 comedi_auto_config+0x1f2/0x440 drivers/comedi/drivers.c:1076
 usb_probe_interface+0x307/0x930 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x234/0xc90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
 __device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
 device_add+0x117e/0x1aa0 drivers/base/core.c:3625
 usb_set_configuration+0x10cb/0x1c40 drivers/usb/core/message.c:2207
 usb_generic_driver_probe+0xad/0x110 drivers/usb/core/generic.c:254
 usb_probe_device+0xec/0x350 drivers/usb/core/driver.c:294
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x234/0xc90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
 __device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
 device_add+0x117e/0x1aa0 drivers/base/core.c:3625
 usb_new_device+0xd80/0x19f0 drivers/usb/core/hub.c:2596
 hub_port_connect drivers/usb/core/hub.c:5465 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
 port_event drivers/usb/core/hub.c:5765 [inline]
 hub_event+0x2e62/0x4f40 drivers/usb/core/hub.c:5847
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/22 22:54 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8be0c877fb3b fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING in comedi_release_hardware_device
* Struck through repros no longer work on HEAD.